Improvement in modes of operating presses



UNITED STATES PATENT FFIICE@ DAVID L. MILLER, OF MADISON, NEW JERSEY.

IMPROVEMENT IN MODES OF OPERATING PRESSES.

.To all whom t may concern,.-

Beit knownthat I, DAVID L. MILLER, of Madison, in the county of Morrisand State of New Jersey, have invented certain novel and usefulImprovements in the Mode of yOperating Presses used for Pressing Cotton,Hay, or other Purposes; and I hereby declare the following to be a full,clear, and. exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which correspond with` and form a partof the specication.

In order that the public may fully understand the nature of myinvention, and those skilled in the art be enabled to construct andoperate the same, I will describe it as follows:

Figure l is a perspective view of my press.

, Letters A LA A are four round columns or standards secured at theirtops and bottoms by two plates, E E, and nuts i z'. Letter B is astationary barrel which is secured to the top plate, E, and forms thebox G, in which the endless screw-gearing operates. C is an innerscrew-chamber or cylindric nut in which the main or lifting screwoperates when turned by the small crank and gearing G, but the nut OVrevolves around the prime motor or main screw, which is held.stationary by means of the screw-gearing G when the press is operated bythe-large bevel-gear D. Letter L is the movable or press plate, which isprovided with a hole in its center to receive the lower end of themovable cylindric nut C, which is also provided with a short shaft orbearing at its lower end, upon which it revolves when turned by thelarge crank D.

Fig. 2 is a sectional view of my double-acting press, showing thestandards AA, top and bottom plates, F F, and a vertical section of thestationary barrel B, the revolving nut C, the main or lifting screw H,the endless screw-gearing G', and the bevel-gearing D.

The superiority of the above arrangement is, that I am enabled to workwith greater c apaeity and pressure than by any other press ever usedexcepting the hydraulic: press, inasmuch that by the bevel-gearing D andcylinder C, I get a quick action or pressure upon the plate E, but whena heavy pressure is required-'such as pressing cotton, book-binding,&c.-I turn the small crank or gearing G, that revolves the main screw H,and not the cylindric nut O, but simply forces the nut O down'with atremendous pressure by means of an independent power from the large gearD, which power requires eleven revolutions of the crank to carry theplate L through the same space that it would pass through by onerevolution of the crank D, but the power of gearing. G is equivalent totwenty times (more or less) to that of the gearing D, hence theapplication of two distinct acting powers or gearings applied tooperating presses after the above plan I believe to be novel and usefnl.I do not confine myself to any number of those gearings for operatingpresses, as one or more sets may be applied to a press successfully.

I dornot pretend to claim the individual or separate parts of theabove-described apparatus for operating presses, as my patent onlifting-jacks covers both the gearings, outer cylinder, B, and innercylinder, O; but

Vhat I claim as novel, and what I wish to secure by Letters Patent ofthe United States,

The application of two distinct actions by means of the bevel-gearing D,endless screwgear G, barrel B, cylindric nut G, arranged and operatedsubstantially as described, and shown in the drawings.

In testimony whereof I hereunto subscribe my name in the presence ol"two witnesses.

.DAVID L. MILLER.

